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"NE 752,107. A A I EATENTED EEE. 1e, 1904.

- l N. NLGEAED.

EU'EE SCREENING MACHINE Y APPLIUATIO FILED MARIN. 1903. N0 MODEL. 3 SHEETS-SHEET 1.

No, 752,107. PATNNTBN PCB. 1C, 1904.

. N. RICHARD.

PULP SCREENING MACHINE.

APPLICATION FILED MAR; 14, 1903. N0 MODEL. 3 SHEETS-SHEET 2.

C N wfeaesA l I gnou/1,410@ Maw* QM N0.v52,1o7 PATENTBD PBB .16,1904.

N.R1GHARD.

PULPSGREBNING MACHINE.

APPLIUATION FILED HAR. 14. 1903.

No MODEL. s SHEETS-samba.

` 1 Y #fr/7g UNITED STATES Patented February 16, 1904.

PATENT OFFICE.

PULP-SCREENING' MACHINE.

SPECIFICATION forming part of Letters Patent No. 752,107, dated February 16, 1904.

Applicationiled March 14, 1903. Serial-No. 147,860. (No model.)

To @ZZ whom it may concern.-

Be it known that I, NAPOLEON RICHARD, a

subject of the King of Great Britain, residing at Sherbrooke, in the Province of Quebec, 5 Canada, have invented a new and useful Pulp- Screening Machine, of which the following is a specification.

This invention relates to machines for screening pulp; and it has for its object the a improvement of certain details of construction of `a machine in common use, a type of which is disclosed in the patent t Smith, granted July 4, 1899, No. 628,234.

To these ends the'invention consists of a pulp-screening machine constructed substantially as hereinafter described and illustrated, and dened in the appended claims.

Referring to the drawings, in which similar letters of reference indicate similar parts,

D Figure 1 is an end elevation of a machine constructed in accordance with this invention. Fig. 2 is a side elevation ofthe same. 3 and 4 are views in elevation of details of the construction.

5 In the drawings, A represents the frame of a pulp-screening machine,`upon which is supported the pulp-box A, which is hinged to said frame, so as to permit of its being raised or lifted up when it is necessary. The floor D of the pulp-box is provided with removable screens a, beneath which are arranged the diaphragms c, which are connected to the standards c2, of whichthere may be any suitable number. The lower end of the standard c2 is 5 provided with a casing B, which is preferably rectangular in shape and is provided with a removable face 5, removably secured to the casing B by any suitable means, such as screws. The lower part of the casing B is open, and in the upper portion is arranged an adjusting-plate ZJ, which is adapted to rest upon a bearing-block of lignum-vitae or other suitable material t2, which is loosely held in said casing and projects through the open 5 end, so as to rest upon the cam-disk D. The

adjusting-plate b is provided with two adjusting-screws 53, which are threaded through the upper portion of the casing B, wherebyr the bearing-block 52 may be properly adjusted to compensate for wear.

It is apparent from the construction above described that the bearing-block 62 will always be held in Contact withthe face of the camdisk D and can be constantly adjusted to compensate for uneven wear and that when worn out can be readily removed withut stopping or otherwise interfering with the operation of the entire machine and a new bearing-block substituted.

The cam-disk D is xed upon the shaft A2, which is journaled in an ordinary two-part bearing-box D', which rests upon and is supported by the pillow-block D2. lIhe'pillowblock D2 is removably held to the frame A by means of suitable threaded bolts and is-similarly secured to the bearing-box D'. per face of the pillow-block is beveled transversely, so that when the securing-bolts are removed it may be readily removed by a slight blow with a hammer, whereupon the bearingbox D maybe taken from the shaft and the .friction-packing removed and replaced when required without stopping the 'entire machine or interfering with its action, as is-necessary with the ordinary type of machine now in use.

The importance of the improvements above described will be better appreciated when it is remembered that in machines of this type The upthere are usually five diaphragms with their standards and bearing-blocks working on the cam-disks fixed upon one shaft. rI`he constant hard service wears the bearing-blocks quickly and unevenly, necessitating frequent repairs and adjustments. In the old type of machine the adjustment or replacement of a single bearing-block was a matter of considerable work and necessitated the stopping of the entire machine with its five diaphragms, thus causing trouble, loss of time, and considerable expense. By means of the construction above described the necessary repairs and adjustments can be easily and quickly made by an unskilled operator and entails the stopping of only one diaphragm.

The frame A is provided with an upwardlyextending arm E at a point opposite each standard c2, upon the upper extremity of which is removably secured a wooden springbar e, the other end of which is removably secured to the rear face of the casing B, the

IOO

purpose of which is to maintain the constant contact of the bearing-block with the camdisk.

Bearing upon the upper portion of the spring-bar e is a metal reinforcing-spring e', suitably secured to the upper portion of the arm E. A suitable set-screw e2 is threaded in a bracket formed on the arm E and serves to regulate the tension of the spring-bar e, as required, in an obvious manner.

The diaphragm a is provided near one edge with a long and narrow slot f, which communicates with a passage f', formed in one of the supporting-timbers of the frame and which leads into a flow-box F, mounted upon the side of the frame of the machine. The iiow-boX is of a capacity suited to the size of each screen and is provided with a suitable outlet. (Not shown.) At a convenient point between the outlet and the passage f is Xed a partition f2 of a height suiiicient to always retain in the iiow-boX'a quantity of pulp,

' within which is immersed the end of a boxcover f 3, which covers the opening of the passage f and forms a liquid seal to prevent the backflow of air therein.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a machine of the type set forth, the combination of the frame of a pulp-box, a diaphragm arranged beneath said boX provided with a slot therein, a diaphragm-supporting standard, a casing mounted thereon adapted to receive a bearing-block, means carried by the casing to adjustably feed the bearingblock, a flow-box in communication with the slot of the diaphragm, a partition formed within said boX, and a cover mounted within the box having at one end a portion thereof projecting below the top of said partition to be immersed in the pulp to form a liquid seal, substantially as set forth.

2. In a machine for screening pulp, the combination with a suitable frame, of the diaphragm-supporting standard, a casing mounted thereon having an opening in its lower portion adapted to receive a bearing-block, and means carried by said casing for adjustably feeding said bearing-block, substantially as set forth.

3. In a machine for screening pulp, the combination with a suitable frame, of the diaphragm-supporting standard, a casing mounted thereon having an opening in its lower portion adapted to receive a bearing-block, a removable face for said casing, a plate mounted within said casing and adapted to contact with the said bearing-block, and adjustingscrews threaded through said casing and connecting with said plate, substantially as set forth.

4. In amachine for screening pulp, the combination with the operating-shaft journaled in suitable bearings, of a removable pillow-block supporting said bearing and having an inclined face, whereby its removal is facilitated, substantially as set forth. v

5. In a machine for screening pulp, the combination with the operating-shaft journaled in suitable bearings having an inclined or beveled face upon its lower side, of a removable pillow-block having its supporting-face beveled or inclinedto correspond with the beveled face of said bearing, whereby the removal of the said pillow-block is facilitated, substantially as set forth.

In testimony whereofI have signed my name to this specification in the presence of two subscribing witnesses.

Montreal, Canada, January 23, 1903.

NAPOLEON RICHARD. Witnesses:

ERNEST SYLvEsTRE, CHAS. WILKrNs. 

